Method of and means for attaching elastic heels to boots or shoes



Nov. 10, 1925. 1,560,611

5. STANICK METHOD OF AND MEANS FOR ATTACHING ELASTIC HEELS TO BOOTS OR SHOES Filed June 24. 1921 -V.. 1 iiIIIIIIIIIIIIIIII/IIII III IIIIIIIIIIZJ Patented Nov. 10, 1 925 UNITED STATES JERSEY.

METHOD or AND MEANS FOR n'rrncnmennnsrrc HEELS To iaoo'rs' oa snons.

PATENTj OF FICE;

SAMUEL STANICK, MARLBORO, MASSACHUSETTS, ASSIGNOR TO UNITEID SHOE M'Ae CHINERY CORPORATION, OF PATERSON, NEW JERSEYyA COR POBATION OF NEW Application filed June 24, 1921. Serial No. 480,056.

To all whom it may concern:

'Be it known that I, SAMUEL STA-NICK, a citizen of Germany, residing at Marlboro, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Methods of and Means for Attaching Elastic Heels to Boots or Shoes, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. i v

This invention relates to methods of and means for attaching elastic heels to boots or shoes.

Heels of this class are commonly composed of rubber or a composition containing rubber, and in the process of their manufacture are Vulcanized in a mold which determines their size and shape. Such heels usually have embedded in them washers through which the nails for attaching the heel to the shoe are to be driven, the heads of the nails being seated upon the washers.

In the process of manufacture of the heel,

washers are placedupon-pins in the mold above referred to, and the mass of rubber composition is filled in around them and vulcanized. Inasmuch as the pins occupy fixed positions in the mold cavity, it might be expected that the positions of the washers in all heels from a given mold would be the same, andthis is nearly'enough true to meet the requirements of the method of at. taching the heels which was formerly generally practised, namely by inserting the attaching nails and driving them by hand.

In recent years heeling machinery has been developed for attaching elastic heels and, with the tremendous increase in the use of such heels, its employment has become a commercial necessity. It is frequently found that the location of the washers in rubber and like heels is not accurate enough. to secure sufficiently exact register with the holes in the nailing die of the heeling machine to ensure that the nails shall pass through the Washers with certainty. The inaccuracy and variation in the location-of the washers in the heels may be due to a variety of causes, such as shrinkage or unbalanced stresses in the rubber causing the washers to shift after the heel is removed from the mold, bent washer pins, pins not identically located in different molds, etc. I Another reason for,

failure to secure accurate register of the washers with the holes in the'nailin'g dielies in the fact that the more'or less yielding} material in the elastic heel is distorted by the pressure of the heeling machine so'that the washers {are shifted'from their normal relationto each other into uncertain positions.

vide suction cups or cavities in thejtread face of a rubber'heel, for the purpose of ornamentation and to prevent slipping upon wet surfaces, and these cavities are usually co-axial with the washers. The uncertainty of the nails entering the washers properly is aggravated in the case of such heels by the fact that a considerable blank space exists between the face of the nailing die of the heeling machine and the bottom of the cavity where'the attaching nail really begins to enter the substance of the heel. The

Furthermore, it is very common to pro nail is not guided in this space and, not in-.

frequently, swings to one side or the other sufficiently so'that it enters the heel substance at the bottom of the cavity at an inclination and is deflected away from the hole in the washer, sometimes even missing the washer entirely.

It is the object of the present invention to overcome the various diflicultiesabove enumerated and to provide a method and apparatus, by the use of which, elastic heels may formity,without loss of time or. waste of material. i I V I To this end the invention consists, in one aspect, in an improved method of attaching elastic heels containing washers, character ized by the steps of first forcing the washers, which may not be identically located in different heels, to predetermined, fixed locations, and then driving heel attaching fastenings through the holes of the washers thus positioned; As a more specific development of the invention when applied to a heel having cavities in its tread face, the improved method comprises the accurate posibe attached with speed, accuracy, and uni tioning of the Washers in predetermined locations by the engagement of the Wall of the cavity by a positioning tool or instrument, through the agency of which that portion of theheel body which contains thewasher is moved, it necessary, into an exact, predetermined position. By this method not only are misplaced or idisplaced washers forced into their proper. positions, but displacement of the Washers due to distortion of the heel by the pressure employed in the attaching operation" is prevented. While this novel method may be practised with the aid of a variety of tools or implements, a featureot the present invention includes the provision otimproved meansparticularly adapted to facilitate the, practice oftthe method and, in

the embodiment illustrated, herein, coming the. Washer carrying portions 7 of the h e1,11as'u1s function of guiding the at,

taching nails continuously to the 'point whereothey actually enter the heel.

Various other features and advantages of the invention willobe apparentfr'om reading the following detailed description of a specitic embodiment thereof in connection with the accompanying. drawings,.in which:

Figured illustrates a rubber heel applied to a leather or leathei board baseyready to be attached to a shoe;

Fig. 2 shows the upperportion of a well .known type offheeling machine provided with a nailing 'die embodying the.;present inyentio'n;

3 is an enlarged sectional view showing the rubber heel just beginning to engage thepressure applying portion o'fi the nailing die; and v t "Fig, a view partlydinperspective andpartly in section showing. the heel 'under pressurey ith the,.washers positioned and'the attaching nails driven. c u 7 Referring now to thefdrawingsflO indicates a well known type of rubber heel which is in extensive commercial use. The heel' 10 .i s shovvn in Eigfitas applied to a heel base l2 consisting of one or more lifts'ot 24 are now caused to descend'and drlve the leather, leatherboard or like material.

Suction cups or cavities 1.4, surrounded by elevations 16 are formed in the tread face of the heel anda're coaxial with theh'oles 18 which are formed the heel by the pins upon which the, washers 20 are, supported in. the heel mold while the heel is' being formed For reasons, already e2;-

a plate 32 which may be secured to theunder side of the nailing die 30 as a matter of 'ni'anufa'ntu'rinp; convenience, or the lower face of the nailingdie, or the purposes of the present invention, Inight equally well have the conformation illustrated upon the loweri acc of the, praises. its shown,"the nail holes in the n'1ember32 are of the same size as, and are placed in exact alinement \vitlnfthenail and driver guiding'holes 36 in' tliemajor portion er thefldieSO. 'Each of the holesM is surrounded" by .a' projec tion' whiclris otsubstantiallythe same size and shape as one of the cavitiesflt in the tread face ot'the heel to" be attached. The location oi the projections 38 in relation to "each other, is, of course,i predetermined and,"i'n the illustrated machine, fixed. The position of the holes 3% is identical Withthe' intended position of'theholes 18 in" the heel, but Fig.3 illustrates a condition which not infrequently exists, viz, the holes 18 are not spaced exactly the same as the holes 34 and, therefore, do not register'properly there with. It now pressure be applied to force the rubberhe'ellO toward the nailing die the rigid projections '38, entering the correspondingly shaped cavities 14 will force the yielding material of the heel 10 into such a shape that the washers" 20 will; occupy accurately predetermined positions in'line with the drivers 24. In the event that the holes 3% and 18 are in alinement when the parts are in the relative position illustrated in Fig.3, the projections 38, entering the cavities 14, simply serve tomaintain the alinement, preventing any possible shifting of the washers by distortion ot'the heel due to the application of pressure. The nails 4%) may ncwbe deposited in the nailing die, for example, by the usual loader block 4-2, and will be guided positively andaccurately all the way intothe holes-18 of the heel 10 and, perforce, through the holesin the centers or" the washers-20. The drivers nails home, in which position, the-irheads are seated in the washers 20. This condition is illustrated in Fig. 4-. The drivers having been retracted and the pressure removed, the shoe with the heel attached is ready to be taken from the machine.

ln'the course of the preceding description-- the term rubber heel has been used he quently but it should be understood that this expression is to be construed in an inclusive sense rather than in a restrictive sense, it being intended to refer to any heel or heel lift or section made of yielding, elastic material having more or less of the characteristics of rubber.

Having thus described my invention, what Iclaim as new and desire to secure by Letters Patent of the United States is 1. A method of attaching elastic heels containing washers, consisting in first forcing the washers into predetermined,fixed, relative positions, and then driving heel attaching fastenings through the holes of the washers thus positioned.

2. A method of attaching elastic heels, consisting in preliminarily forcing those portions of a heel through which the attaching fastenings are to pass into predetermined, relative positions and then driving the fastenings through the heel while maintaining said portions of the heel in said positions.

3. A method of attaching elastic heels,

containing washers, consisting in first forcing the washer containing portions of a heel into predetermined, relative positions, and then driving heel attaching y fastening's through the holes of the washers.

4. A method of attaching elastic heels containing washers, consisting in first forcing the washers into predetermined, relative positions by engagement with portions of the heel adjacent to the washers, then driving heel attaching fastenings through the holes of the washers while maintaining them in said positions.

5. A method of attaching an elastic heel having cavities in its tread face, through which the attaching nails are to be driven, consisting in first positioning the cavities in predetermined, relative locations by engagement with their walls, and then holding them in said locations while the nails are driven.

6. A method of attaching an elastic heel containing washers and having cavities in its tread face in register with the washers,

consisting in first forcing the washers into predetermined, relative positions by the engagement of the walls of the cavities with a positioning instrument, and then driving attaching nails through the washers.

7. Means for attachin elastic heels containing washers, comprising heel engaging instrumentalities. constructed and arranged to force the washer bearing portions of a heel transversely into predetermined, relative positions.

8. Means for attaching elastic heels containing washers, comprising heel engaging instrumentalities, constructed and arranged to force the washer bearing portions of a heel transversely into predetermined, rela i tive positions and-'mainta'in them in said positionswhile the attaching" nails are driven, and means for inserting and driving attaching fastenings through the portions of the heel thus positioned. L

9. Means for attaching elastic heels cornprising a pressure applying member constructed and arranged to engage the portions of a heel through which attaching nails gage and shift the nail receiving portions of a heel transversely into predetermined, relative positions.

11. Heel attaching mechanism for elastic I heels comprising. a pressure applying member having fixed pro ections upon its pre"- v sure applying face constructed and arranged" to engage certain portions of a heel and shift them transversely into predetermined, relative positions when said member and the heel are moved towardeach other, means for efiecting relative approaching movement of said member and heel, and means for driving attaching nails through said portions of the heel.

12. In a heel attachin machine for attaching heels having cavities in their tread faces, a nailing die having projections an ranged to enter said cavities and position them in predetermined, relative locations, and nail guiding passages through said projections.

13. In a heel attaching machine for elastic heels containing washers and cavities in their tread faces in register with thewashers, a pressure applying nailing die having predeterminately arranged projections of the same size and shape as the cavities in a heel, nail guiding passages through the pr jections, and means for driving heel attaching nails throughsaid passages into a heel held in engagement with the die.

14. Heel attaching mechanism for elastic heels comprising a nailing die having a heel engaging face conformin to a predetermined standard heel an I provided with tapered projections to interlock with c0rresponding cavities in the washer bearing portions of the heel to preserve the relation of the washers in an accurate heel and to position the washers in an inaccurate heel to conform to the predetermined standard. 15. In a heel attaching machine for elasuniform pressure. t0. all parts .O-f the heelzarea except the cavities. 1

,16. In} a. heel ,atfiaching machine fan. elastic heels containingwmshers and having cavities in. their treadffaces, in register wi'th the Washers, 2L nailing die having predeterminate ly, arranged tapered projections-morrespondi-ng to fihe cavities; in 1a.- heel/and the 0 remainder, of the heel engagingportion Of its face flat: and unbroken.

:In testimony Where-0f Ilmve signed my nametothisspecification.

SAMUELSTANIOK. 

